Machine for forming armature coils



J. F. COMSTOCK.

MACHINE FOR FORMING ABMATURE COILS.

APPLICATIN FILED sgPT. 2|, 192|.

'1. F. CONISTOCK.

MACHINE FOR FORMING ARMATURE COILS.

A PPLICATION FILED SEPT- 2l. 192i.

Patented Deo. 5, 1922.

2 sHEETs-sHEH'z.

'UaEreasraras 1,437,881 Aea'rsar OFFICE. i

tussen ooMs'rooir, or Winans-Baalen, rnNNsYLvANA.` ,y

t IlLlCIHIll'E FOR FORMING. ARYIATURE COILS.

Application led September 2l,'1921; Serial No. 502,269.`

To all whom t may concern Be it known that l, fresal l?. Cotrsroorr, a citizen 4oi: the United AStates, `residing at ``Wilkesl3arre, fin the county of Luzerne and State ot Pennsylvania, have invented certain ,new and useful Improvements in Machines for Formingy Armature Coils, oi

which the following isa specification.

Thisfinvention relates to machines vtor bending and twisting coils et wire into preferred 'forms for use,j in thewarmatures ci electric machines; andv it consi-sts-..in.y thek novel construction and combinationy ot the parts hereinafter fully described and claimed whereby the coil of wire previously wound into the form of an endless loop or link is bent and twisted to the required form. f v

ln the drawings, Figure l isa front view,y

of a machine constructed according to this invention. Fig. 2 is afront view showing the outline of anarmature coil after being bent and twisted; andl not showing thek separatewires. Fig. 3 is an end view of the same. Fig. 4 is a cross-section through the machine, taken on the line in Fig. fl,

and drawn to a larger scale. Fig'. 5 is a sectional plan view of one of the coil supports, taken on the line y5*--5 in Fig. 4.

` A supporting'irame is provided, and is formed of two uprights 6 which are coupled together by a horizontalguide bar 7 at their upper parts, and two distance pieces 8 at their lower parts.' The guide bar 7 is preferably cylindricalwyand 10 are two` carriages. which are slidable,longitudinally on guide bar, and have lugsl2 and adjusting screws 14 so that they canbe adjusted to slide freely on'the guide'bar withoutbeing extremely loose.` The carriages aretightened on the guide bar by` contracting them by means of the screws 14.

The carriages have flat supports have horizontal pins 2i for supportingthey rl`hese two carriages aresplined to the l5 on their upper sides, and 16 are supportingl brackets which are secured to the supports llhe supports l5 Y,have slotslj ior the The supports -lghave ,alsol ends of the coil otwire, and they have beveled portions 22,011 their edges which are i i nearest to the center. of the machine to permit the bending of the coil.

The wire of which the armature coil is f ormed is wound into the `form of-a long link, and the end portions of this link are placed on the two pins 21k so that it issus-l uprights 6 under' the guide bar7. Each.

arm has a stop pin 27 which is adjustable circumferentially in a curved slot 29 in the upright, and which operates' to; limit the movement of the arm. The curved slots are arranged concentric with the pivot pins 26.

Each arm is provided with a sleeve 30 which` is adjustable longitudinally on it, and whichl is provided with a fastening screw 31,-`andv each sleeve has an eye 32on the side of it nearest to the guide bar 7.

The two arms 24 are arranged at the front of the machine, and the twok arms 25 are arranged 'atkits rear part. Afront bar 34 is arranged horizontally and issecured inthe eyes 32 of the iront arms 24, yandy a similar bar 35 is secured between the two rear arms 25, and is arranged 34. f f I Each horizontal` bar 34 and 35 has 'two similar clam blocks 36 secured on it by screws 37 .v T e clamp blocks are adjustable on the bars, and can be secured to them at any desired distance apart. The -clamp blocks 3G. of the rontbarare arranged to project rearwardly, and the clamp blocks of the rear bar are arranged to project forwardly. lach clamp block 36 has a hookshaped jaw 38 the stem ot'which is jour.- naled in the free end -portion of the yblock and provided with a locking` screw 39. Each clamp. block has also ank adjustable jaw 40 which is provided with a slot 4l, and a screw 42 for securing it .in-position.

lThe ends 454 of the wound coil are placed in engagement with the pins 2l, and the clamping jaws are set at suitable distances apart fon the bars 34 and 35, vand at suitabley distancesy from the pivot vpins 26 0I" the arms, so that they will engage withy the longiparallel to the front bary ico tudinal stretches 46.01:n the coil, which are each other instead of being parallel, and so that the end portions 45 are set at an angle to the axis of the guide bar 7. The car-r riages 10 slide towards each other when the armsy are moved apart. The carriages l0 slide freely, but their trictional resistance may be adjusted, if necessary, by means ofv the=screws 14:. Any suitable stops may be applied t0 limit the length of the sliding movements of the carriages 10, if desired, but they stop sliding automatically when they arms 24 and 25 strike the stops 27.

The various parts of this machine can be set and adjusted so that wire coils of dillerent size andiweight can be bent and twisted. The coils can also be bent and twisted to form differently proportioned coils to suit different armatures. rlhe completed bent and twistedy ycoil is removed from the machine by turning around the hook-shapedr clamping jaws and permitting the arms to move towards each other alittle, so` as to permitthe coil to be lifted out ot the clamping jaws, the pins 2l Ibeing rer-loved to .tree the ends oia the coil.

What I claim is:

l. ln an apparatus for operating on an armature coil with end portions and longitudinal stretches, a frame provided with slidable supports for engaging with the end portions o-an armature coil, and front and rear arms pivoted to the said frame and provided with means for engaging with the longitudinal stretches of the coil, the said arms operating to bend and twist the'coil when moved apart and crosswi'se of it.

2. In an apparatus for operating on an armature coil with end portions and longitudinal stretches, a trame provided with a longitudinal guide bar, carriages slidable on the guide bar and provided with means for engaging with the end portions of an armature coil, and front and rear arms pivoted to the frame and provided with means for engaging with the longitudinal stretches of the coil. f

3. In an apparatus for operating on an armature coil ywith end portions and longitudinal stretches, a trarne provided with a longitudinal guide bar, carriages slidable on the guide bar, laterally adjustable brackets secured on the said carriages, pins supported by the said brackets and adapted to engage` with the endportions of an armature coil, and front and `rear arms pivoted. to the tions oLt an armature coil carried byy the said carriages, and front and rear arms pivoted to the trame and provided with means for engaging with the longitudinal` stretches. ofi

the coil.

5. ln an yapparatus for operating onI any armature coil with end portions'and longitudinal stretches, a frame provided with slidable supports lfor .engagingwith the end portions'of an armature coil, front andrear arms pivoted to the said frame and movable` crosswiselof the coil, front and'rearf bars extending between the said arms, and means for engaging with the'longitudinal stretches of the coilcarried ybythe ksaid bars.

6. In an apparatus :tor operating on an armature coil with end port-ions and vlongitudinal stretches, a frame provided with slidable supports for engaging f with the end portions Aof an armature coil, front and rear arms pivoted to the said frame and movable crosswise of the coil, front and rear bars extending-between the said arms, and means tor engaging with the longitudinal stretchesv of the coil adjustable longitudinally on the said bars. A

7. ln anv apparatus for operating von an armature'coil with end portions and longitudinal stretches,-a frame provided with slidable supports for engaging with the end portions of an armature coil, front and rear arms pivoted to the said frame andmovable crosswise of the coil, front andfrear bars extending between the said arms, and movable clamping devices carried by the said bars and adapted to engage with ythe longitudinal stretchesof the coil'.

8. In an apparatus for operatingon an* armature coil with end portions and longilt-udinal stretches, a frame provided with slidportions of an armature coil, front and rear arms pivoted to the said frame and movable erosswise of the coil, and adjustable stops for the arms carried by the frame, said arms being provided with means for engaging with the longitudinal stretches of the coil.

10. In an apparatus for operatn on an armature coil with end portions an longitudinal stretches, a frame provided with uprights and a bar secured between the up- 10 rights, means for engaging with the end portions o an armature coil carried by the said bar, pins projecting inwardly from the uprights under the said bar, and front and rear arms pivoted on the said pins and movable crosswise of the said bar and pro- 15 vided with means for engaging with the longitudinal stretches of the coil.

In testimony whereof I have aixed my signature.

JESSE F, COMSTOCK. 

